/* ========================================
   Pygmalion v0.3.0 — Порог: ЧисСлоБукВ
   Стили для threshold.html (React-версия клавиатуры)
   ======================================== */

/* === RESET & BASE === */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-main: #0a0a0f;
  --bg-card: #1a1a2e;
  --bg-input: #16213e;
  --bg-digit: #334155;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-blue: #3b82f6;
  --accent-green: #22c55e;
  --accent-red: #ef4444;
  --accent-yellow: #facc15;
  --accent-purple: #a855f7;
  --accent-gold: #fbbf24;
  --border-color: rgba(148, 163, 184, 0.2);
  --glow-blue: 0 0 30px rgba(59, 130, 246, 0.4);
  --glow-gold: 0 0 30px rgba(251, 191, 36, 0.4);
  --glow-purple: 0 0 30px rgba(168, 85, 247, 0.4);
  
  /* Цвета клавиатуры из React-версии */
  --kb-bg: #0f172a;
  --kb-key-bg: #1e293b;
  --kb-digit-bg: #334155;
  --kb-text: #ffffff;
  --kb-red: #ef4444;
  --kb-blue: #3b82f6;
  --kb-green: #22c55e;
  --kb-border: #334155;
  --kb-placeholder: #475569;
  --kb-split-line: rgba(255, 255, 255, 0.15);
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-main);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

/* === Кнопки переключения языка (Порог) === */
.lang-switch {
  position: fixed;
  top: 1rem;
  right: 1rem;
  display: flex;
  gap: 0.5rem;
  z-index: 2000;
}

.lang-btn {
  padding: 0.4rem 0.8rem;
  background: rgba(59, 130, 246, 0.2);
  color: var(--text-primary);
  border: 1px solid var(--accent-blue);
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.85rem;
  transition: all 0.3s;
}

.lang-btn:hover {
  background: rgba(59, 130, 246, 0.4);
}

.lang-btn.active {
  background: var(--accent-blue);
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.5);
}

/* ========================================
   ПУТЕВОЙ КАМЕНЬ (Waystone Overlay)
   ======================================== */
.waystone-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at center, #1a1a2e 0%, #0a0a0f 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 1;
  transition: opacity 1s ease;
}

.waystone-overlay.fade-out {
  opacity: 0;
  pointer-events: none;
}

.waystone-container {
  max-width: 1200px;
  width: 90%;
  text-align: center;
  padding: 3rem 2rem;
}

/* Символ: 4 точки в круге */
.waystone-symbol {
  width: 120px;
  height: 120px;
  margin: 0 auto 2rem;
  opacity: 0;
  animation: manifestSymbol 2s ease forwards 0.5s;
}

@keyframes manifestSymbol {
  0% {
    opacity: 0;
    transform: scale(0.8);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

.symbol-svg {
  width: 100%;
  height: 100%;
}

.symbol-ring {
  fill: none;
  stroke: var(--accent-gold);
  stroke-width: 1.5;
  opacity: 0.6;
}

.symbol-dot {
  fill: var(--accent-purple);
  opacity: 0.8;
}

/* Заголовок */
.waystone-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent-gold);
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: manifestText 2s ease forwards 1s;
}

@keyframes manifestText {
  0% {
    opacity: 0;
    filter: blur(10px);
  }
  100% {
    opacity: 1;
    filter: blur(0);
  }
}

.waystone-intro {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  opacity: 0;
  animation: manifestText 2s ease forwards 1.5s;
}

/* Три пути */
.three-paths {
  display: grid;
  grid-template-columns: 1fr 1.5fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.path-option {
  background: rgba(26, 26, 46, 0.6);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2rem 1.5rem;
  opacity: 0;
  animation: manifestCard 2s ease forwards;
  transition: all 0.3s ease;
}

.path-option:hover {
  border-color: var(--accent-blue);
  box-shadow: 0 8px 32px rgba(59, 130, 246, 0.2);
  transform: translateY(-4px);
}

.path-left {
  animation-delay: 2s;
  border-color: rgba(239, 68, 68, 0.3);
}

.path-center {
  animation-delay: 2.5s;
  border-color: rgba(251, 191, 36, 0.3);
  background: rgba(251, 191, 36, 0.05);
}

.path-right {
  animation-delay: 3s;
  border-color: rgba(34, 197, 94, 0.3);
}

@keyframes manifestCard {
  0% {
    opacity: 0;
    transform: translateY(30px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.path-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.path-option h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.path-left h3 {
  color: var(--accent-red);
}

.path-center h3 {
  color: var(--accent-gold);
  font-weight: 700;
}

.path-right h3 {
  color: var(--accent-green);
}

.path-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.path-desc-continued {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-top: 1rem;
  margin-bottom: 1.5rem;
  opacity: 0.8;
}

/* Кнопки путей */
.path-btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
}

.path-return {
  background: rgba(239, 68, 68, 0.2);
  color: var(--accent-red);
  border: 1px solid var(--accent-red);
}

.path-return:hover {
  background: rgba(239, 68, 68, 0.4);
}

.path-enter {
  background: var(--accent-gold);
  color: var(--bg-main);
  border: 1px solid var(--accent-gold);
  box-shadow: var(--glow-gold);
  font-size: 1.1rem;
  padding: 1rem 2rem;
}

.path-enter:hover {
  background: #f59e0b;
  box-shadow: 0 0 40px rgba(251, 191, 36, 0.6);
}

.path-exit {
  background: rgba(34, 197, 94, 0.2);
  color: var(--accent-green);
  border: 1px solid var(--accent-green);
}

.path-exit:hover {
  background: rgba(34, 197, 94, 0.4);
}

.path-note {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 1rem;
  font-style: italic;
}

.waystone-footer {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 2rem;
  opacity: 0;
  animation: manifestText 2s ease forwards 3.5s;
}

/* ========================================
   ПОРОГ: ЧисСлоБукВ (Threshold)
   ======================================== */
.threshold-container {
  min-height: 100vh;
  background: radial-gradient(ellipse at center, #1a1a2e 0%, #0a0a0f 100%);
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.threshold-wrapper {
  max-width: 1000px;
  width: 100%;
  background: rgba(26, 26, 46, 0.8);
  border: 2px solid rgba(59, 130, 246, 0.3);
  border-radius: 16px;
  padding: 3rem 2rem;
  box-shadow: 0 8px 32px rgba(59, 130, 246, 0.2);
}

.threshold-header {
  text-align: center;
  margin-bottom: 2rem;
}

.threshold-title {
  font-size: 2rem;
  color: var(--accent-blue);
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.threshold-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* Этическое предупреждение */
.threshold-ethics {
  background: rgba(249, 115, 22, 0.1);
  border-left: 4px solid var(--accent-yellow);
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 2rem;
}

.threshold-ethics p {
  color: #fdba74;
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Отображение О.К. */
.ok-display-container {
  text-align: center;
  margin-bottom: 2rem;
  position: relative;
}

.ok-display-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  position: relative;
}

.ok-display {
  font-size: 2rem;
  font-family: 'Courier New', monospace;
  padding: 1.5rem;
  background: rgba(10, 10, 15, 0.8);
  border: 2px solid #475569;
  border-radius: 12px;
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.2em;
  transition: all 0.3s;
  flex: 1;
  max-width: 600px;
  text-transform: uppercase;  /* КАНОН v0.3.21: все буквы заглавные */
}

/* Цветовое отображение символов */
.ok-display-char-num { color: #f8fafc; }
.ok-display-char-red { color: var(--accent-red); }
.ok-display-char-blue { color: var(--accent-blue); }
.ok-display-char-green { color: var(--accent-green); }

/* Границы :: */
.ok-display-border {
  color: var(--accent-gold);
  font-weight: 700;
  opacity: 0.8;
}

.ok-display.valid {
  border-color: var(--accent-green);
  box-shadow: 0 0 20px rgba(34, 197, 94, 0.3);
}

/* v0.3.21: Цвета символов сохраняются при валидации, меняется только рамка */

.ok-display.invalid {
  border-color: var(--accent-red);
  color: var(--accent-red);
}

.ok-display.invalid .ok-display-border { color: var(--accent-red); }

/* Кнопка копирования */
.btn-copy {
  width: 50px;
  height: 80px;
  background: rgba(59, 130, 246, 0.2);
  border: 1px solid var(--accent-blue);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
}

.btn-copy:hover {
  background: rgba(59, 130, 246, 0.4);
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.5);
  transform: scale(1.05);
}

.btn-copy:active {
  transform: scale(0.95);
}

.copy-feedback {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-10px);
  background: var(--accent-green);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s;
  white-space: nowrap;
  margin-top: 10px;
}

.copy-feedback.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.ok-display.valid {
  border-color: var(--accent-green);
  box-shadow: 0 0 20px rgba(34, 197, 94, 0.3);
  color: var(--accent-green);
}

.ok-display.invalid {
  border-color: var(--accent-red);
  color: var(--accent-red);
}

.ok-length {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.ok-length.valid {
  color: var(--accent-green);
  font-weight: 600;
}

.ok-length.warning {
  color: var(--accent-yellow);
}

/* ========================================
   КЛАВИАТУРА ЧисСлоБукВ (React-версия)
   ======================================== */

.chislobukv-keyboard {
  width: 100%;
  max-width: 900px;
  margin: 0 auto 2rem;
  padding: 1rem;
  user-select: none;
}

/* Легенда клавиатуры */
.kb-legend {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1rem;
  font-size: 0.65rem;
  color: var(--text-muted);
  font-family: monospace;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.kb-legend-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.kb-legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.kb-legend-dot.green {
  background: var(--kb-green);
}

.kb-legend-dot.split {
  border: 1px solid var(--kb-border);
  background: var(--kb-key-bg);
}

/* Ряд клавиатуры */
.kb-row {
  display: flex;
  gap: 0.4rem;
  justify-content: center;
  height: 52px;
  max-width: 860px;
  margin: 0 auto 0.5rem;
  background: var(--kb-key-bg);
  padding: 0.4rem;
  border-radius: 12px;
  border: 1px solid var(--kb-border);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  transition: all 0.2s ease;
}

.kb-row.kb-draggable {
  cursor: grab;
}

.kb-row.kb-draggable:active {
  cursor: grabbing;
}

.kb-row.drag-over {
  border-color: var(--accent-blue);
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.4);
}

.kb-row.dragging {
  opacity: 0.5;
}

/* Drag handle */
.kb-drag-handle {
  display: flex;
  align-items: center;
  color: var(--text-muted);
  margin-right: 0.4rem;
  cursor: grab;
}

.kb-drag-handle svg {
  width: 16px;
  height: 16px;
}

/* Кнопки клавиатуры */
.kb-btn {
  flex: 1;
  min-width: 32px;
  height: 100%;
  border-radius: 8px;
  border: 1px solid var(--kb-border);
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: inherit;
  font-weight: 700;
  font-size: 1rem;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--kb-key-bg);
}

.kb-btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.1);
}

.kb-btn:active {
  transform: translateY(1px);
}

/* Цвета кнопок */
.kb-num {
  background: var(--kb-digit-bg);
  color: var(--kb-text);
}

.kb-num:hover {
  background: #475569;
}

.kb-red {
  background: var(--kb-key-bg);
  color: var(--kb-red);
}

.kb-red:hover {
  background: rgba(239, 68, 68, 0.15);
}

.kb-blue {
  background: var(--kb-key-bg);
  color: var(--kb-blue);
}

.kb-blue:hover {
  background: rgba(59, 130, 246, 0.15);
}

.kb-green {
  background: var(--kb-key-bg);
  color: var(--kb-green);
  position: relative;
}

.kb-green:hover {
  background: rgba(34, 197, 94, 0.15);
}

/* Индикатор двойной кнопки */
.kb-green::after {
  content: '';
  position: absolute;
  bottom: 3px;
  right: 4px;
  width: 4px;
  height: 4px;
  background: var(--kb-green);
  border-radius: 50%;
  opacity: 0.5;
}

/* Разделённая кнопка */
.kb-split {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0.2rem;
  position: relative;
  overflow: hidden;
}

/* Горизонтальный разделитель (верх/низ) */
.kb-split::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--kb-split-line);
  transform: translateY(-50%);
  pointer-events: none;
}

.kb-split-tl {
  font-size: 0.9rem;
  line-height: 1;
  z-index: 1;
  position: absolute;
  top: 4px;
  left: 6px;
}

.kb-split-br {
  font-size: 0.75rem;
  line-height: 1;
  opacity: 0.8;
  z-index: 1;
  position: absolute;
  bottom: 4px;
  right: 6px;
}

/* Кнопки разделённые по цветам */
.kb-split.kb-red .kb-split-tl,
.kb-split.kb-red .kb-split-br {
  color: var(--kb-red);
}

.kb-split.kb-blue .kb-split-tl,
.kb-split.kb-blue .kb-split-br {
  color: var(--kb-blue);
}

.kb-split.kb-green .kb-split-tl,
.kb-split.kb-green .kb-split-br {
  color: var(--kb-green);
}

.kb-split.kb-num .kb-split-tl,
.kb-split.kb-num .kb-split-br {
  color: var(--kb-text);
}

/* Функциональные кнопки */
.kb-control {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.kb-delete {
  background: #7f1d1d !important;
  color: white;
  flex: 1;
}

.kb-delete:hover {
  background: #991b1b !important;
}

.kb-backspace {
  background: #7f1d1d !important;
  color: white;
  flex: 1;
}

.kb-backspace:hover {
  background: #991b1b !important;
}

.kb-space {
  flex: 2;
  background: var(--kb-digit-bg);
  color: var(--text-secondary);
  font-size: 0.7rem;
}

.kb-space:hover {
  background: #475569;
}

/* Фиксированный ряд (5-й) — увеличен на 20% */
.kb-row.kb-fixed {
  cursor: default;
  height: 62px; /* 52px × 1.2 = 62.4px → 62px */
}

/* Кнопка подтверждения */
.threshold-actions {
  text-align: center;
  margin-bottom: 1.5rem;
}

.btn-primary {
  padding: 1rem 3rem;
  background: var(--accent-blue);
  color: white;
  border: none;
  border-radius: 12px;
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s;
  letter-spacing: 0.05em;
}

.btn-primary:hover:not(:disabled) {
  background: #2563eb;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.5);
}

.btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  background: #475569;
}

/* Информация */
.threshold-info {
  text-align: center;
  padding: 1rem;
  background: rgba(10, 10, 15, 0.4);
  border-radius: 8px;
}

.threshold-info p {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.6;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
  .three-paths {
    grid-template-columns: 1fr;
  }

  .path-option {
    max-width: 400px;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  .threshold-wrapper {
    padding: 2rem 1rem;
  }

  .threshold-title {
    font-size: 1.5rem;
  }

  .ok-display {
    font-size: 1.5rem;
    min-height: 60px;
  }

  .kb-row {
    height: 44px;
    gap: 0.25rem;
    padding: 0.3rem;
  }

  .kb-btn {
    min-width: 28px;
    font-size: 0.85rem;
  }

  .kb-legend {
    gap: 0.8rem;
    font-size: 0.55rem;
  }

  .kb-control {
    font-size: 0.6rem;
  }

  .kb-split-tl {
    font-size: 0.75rem;
  }

  .kb-split-br {
    font-size: 0.6rem;
  }

  .btn-primary {
    width: 100%;
    padding: 1rem 2rem;
  }
}

@media (max-width: 480px) {
  .kb-row {
    height: 40px;
  }

  .kb-btn {
    min-width: 24px;
    font-size: 0.75rem;
  }
}